I need a guidelines how to fix the mobile data is gone?

[AC Question]

And my galaxy A3 samsung it easly slow battery even im not using.

 

[B. Diddy]

Welcome to Android Central! What do you mean the mobile data is gone? Are you saying that your mobile data toggle doesn't turn on? Or it turns on, but doesn't connect to 3G/4G data? Have you already spoken to your carrier about this?

And what do you mean by "easly slow battery"? Are you saying that the battery is draining quickly?